OK, so I heard both ways...then I talked with Ted Cook, senior Entegra engineer at Tampa Owners Dinner. His comment to my question on installing the EMS - HW50C was Entegra Coaches now had surge protection installed (a TRC unit). I ask about voltage changes (both over and under, and he said the protection will handle any issue.
Then in the Owner's Packet, DW found a sheet with the following:
Entegra Coach is not responsible for damage to electrical components caused by electrical spike, or improper ground or polarity to the unit.
Entegra Coach recommends the use of an aftermarket surge protecting device used between the unit shoreline and electrical source."
Since I had opted to not egt it installed at RVone as they required all the time had to fix punch list items and I'd have had to stay over a weekend for a Monday install, I chose to hold off.
I sent a terse message to Ted Cook day before yesterday and got this response:
"I have talked to everyone here at Entegra Coach, and they all confirm that you do not need any other protection. Can you tell me where you are reading this? It must be in one of our ship loose files that we have not corrected since we started adding surge protection." Ted Cook via email on 6 Feb 2013
"The quote in the email I sent you is a copied one page print in the Black
Owners Packet delivered with the coach (I assume that you guys fill the
contents. I quoted it exactly. If you wish I can scan it and send it to
you. The only difference on the sheet and the email I sent was the text
was centered on the paper, and I could bold and underline Entegra Coach.
If your not concerned, and it is just a mistake (read Entegra will
warrantee any damage that might result because the on coach surge and
voltage protection doesn't work, that works for me, but if you read the
quote I sent that was in the owner's pack, that's a pretty strong
I have not had a response to that yet today. I'll let everyone know via this thread when I here more.