Autoformer versus Surge Protector
How many or any owners are using the Hughes Autoformer? Or a Surge Protector? We need to purchase a new one, ours is dead after 15 years. Necessity or Not in your opinion? I will say we are believer...
Forum Discussion
Of interest and something to be aware of is that the Hughes internal mounting kit isn't code legal if installed inside an RV. Article 551-20 specifically prohibits the use of autotransformers (autoformers) inside RVs.
Also of note is that while the Hughes' autoformer contains UL components, the unit as a whole isn't UL approved which is not the same thing. Only UL approved/listed components and materials are permitted by the NEC which is another reason why the Hughes units are not code legal. Good 'ol CW lists the Hughes unit as being UL listed, which it's not...
While you might be just fine if it's mounted inside in a safe manner, has adequate ventilation and has the required clearances and access, if you ever had a fire or someone got a shock, you might be in hot water with an insurance company or AHJ. Having said that, many (me included) have done all sorts of various electrical modifications and nobody needs to take out a permit or required to get an inspection done by an AHJ.
I made some mods to our Hughes autoformer so it can sit underneath our TT versus having to be at a pedestal. Stays dry and is more out of sight.
Also of note is that while the Hughes' autoformer contains UL components, the unit as a whole isn't UL approved which is not the same thing. Only UL approved/listed components and materials are permitted by the NEC which is another reason why the Hughes units are not code legal. Good 'ol CW lists the Hughes unit as being UL listed, which it's not...
While you might be just fine if it's mounted inside in a safe manner, has adequate ventilation and has the required clearances and access, if you ever had a fire or someone got a shock, you might be in hot water with an insurance company or AHJ. Having said that, many (me included) have done all sorts of various electrical modifications and nobody needs to take out a permit or required to get an inspection done by an AHJ.
I made some mods to our Hughes autoformer so it can sit underneath our TT versus having to be at a pedestal. Stays dry and is more out of sight.
