I have this combo extension cord surge block from Furman. They make the same thing for Fender in red 
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I play gigs on generator power a lot, and had an instance where the amps got fried.
Talked to my tech about it, and he recommended one of these:
Amazon.com: Monster HTS 1000 MKIII 8-Outlet Power Center with Clean Power Stage 2 (Discontinued by Manufacturer): Electronics
I think that thing has saved me several times when playing with the generator or at older venues where power can be up and down.
It basically shuts down when the power goes above or below threshold. Which kinda sucks when you are in the middle of a song and the amps shut down for a few seconds.
But hey, better than having your amp destroyed.
I highly recommend one of these things. about $100 USD and worth every penny.
We plug everything into it on every gig.
I dunno how many joules it is rated, but probably thousands.
Count yourself lucky that the place didn't caught fire. The insurance companies are nasty with such damages. I mean, to those who've been struck with damage. You can sue the bar. Normally a regular floor power strip with built in lightning jolt fuse, (to protect from lightning strike, which not anyone can protect against fully), or a RCD. Those can be built in and keep you from damage. As for bad current, with noise and not ampere enough in the grid, go for those Furman conditioners. They have built in fuses anyway, that will blow within a nanosecond (i e both lightning and rcd built in too). You should have pretty expensive equipment in order for it to be worthwhile to purchase that. Maybe the band can share all outputs from that one. If just keeping yourself from injury and equipment from damage, go for the RCD, or lightning jolt fuses. RCD = Residual Current Device
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Better safe than sagging power. Oh, in the US it's called something else I reckon.
GFCI breaker. See here:
Residual-current device - Wikipedia, the free encyclopedia
I am an electrical contractor in Arizona and I have seen the wrath of lightning strikes, utility equipment failure etc.
Alot of people here will tell you that A rack surge suppressor will do nothing. I tend to disagree. But hey, it's pretty obvious which members think they know it all about everything on this forum.
I run a monster 2500 which had a 2775 joule rating, most don't even spec this rating. Which usually means it's low.
What it comes down to is the Joule rating, the higher the number the faster it "clamps" and protects the load connected.
And I like them also because there's plenty of outlets to plug your rack equipment into with one switch to turn everything on at once.
I think I spent about $150 to protect $5000 in gear. I Say it's a pretty good investment![]()
Just something to remember about RCDs, they are designed to prevent personal injury from electric shocks and not to protect equipment.
Count yourself lucky that the place didn't caught fire. The insurance companies are nasty with such damages. I mean, to those who've been struck with damage. You can sue the bar. Normally a regular floor power strip with built in lightning jolt fuse, (to protect from lightning strike, which not anyone can protect against fully), or a RCD. Those can be built in and keep you from damage. As for bad current, with noise and not ampere enough in the grid, go for those Furman conditioners. They have built in fuses anyway, that will blow within a nanosecond (i e both lightning and rcd built in too). You should have pretty expensive equipment in order for it to be worthwhile to purchase that. Maybe the band can share all outputs from that one. If just keeping yourself from injury and equipment from damage, go for the RCD, or lightning jolt fuses. RCD = Residual Current Device
Let me be clear about my statements here.
#2. The situation about insurance claims etc... is understandable, but irrelevant to the questions. I want to know about how to avoid needing the insurance in the first place. It would stink to not be able to gig again until the insurance pays out and they buy new gear. And I am sure the insurance will cover depreciated value, not replacement value...
.
I don't personally recall anyone on this forum say that "...a rack surge suppressor will do nothing". I have read where many people said that the rack surge suppressor is no better than installing MOVs on the power receptacle, which you can do yourself for only a few bucks, and something that I would strongly advise. However, if your equipment is connected to a power source that takes a direct lightning strike, it is doubtful that any surge suppressor/voltage regulator, etc. on the market would have helped, e.g., the service cable going to my workshop/garage was struck by lightning. The energy from that hit vaporized about 3' to 4' of that cable. It's anyone's guess what that would have done to a voltage regulator.
Don't know about the place where you're from, but the industrial standard here are 3 classes of surge protection: A, B and and home application protection. Class A is lightning protection which has no galvanic connection to ground, but if the voltage is high enough it connects directly. B is for some kilovolts to protect your home from transformer failure and the third is the one you put into jacks, it's for saving high ohm loads in case of neutral-failure. Ofc the last one isn't going to save your gear from lightning strike or failed galvanic isolations in transformers, but you could apply a class B into an amp, although it's not made for it.
I held an electrical contractors license many years ago, but have not kept up with the regulations since I discontinued my license. However, I think the only personal safety requirements we currently have for residential electrical systems is proper grounding/bonding, and ground fault circuit interrupters (GFCI) on any outdoor receptacles and receptacles within a certain distance of a water outlet. I am either reading your post wrong or you are mixing industrial and residential regulations, which may or may not matter.
That's not strictly true.. but it depends on the surge size, voltage and so on.
A large enough surge (200+ amps??) CAN jump breakers and fry TV's etc...