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Battery cable lug sizes

navybanker
Explorer
Explorer
Have a disconnect switch to install but the switch requires 3/8 inch lug size. Batteries have 5/16 lugs. Batteries are here at home so know they are 5/16. Camper is one hour away in storage. Is the ground cable lug attached to the camper frame a 3/8 or 5/16 lug? Planning on placing disconnect switch to negative/ ground cable. Need to know what size cable lug needed to hook up switch. 2017 Montana 3611 with two 12 volt group 27 batteries in parallel. Thanks
2017 Montana 3611 RL
2012 Chevy 2500HD Duramax
4 REPLIES 4

navybanker
Explorer
Explorer
Finally drilled out one lug with bit I have. Now looks like an
"oval". Thanks, Ca Traveler
2017 Montana 3611 RL
2012 Chevy 2500HD Duramax

navybanker
Explorer
Explorer
Tried the drill route and it takes awhile or I don't have the right drill bit. Can order cable with any size lugs, awg and length a lot easier. I see a "reamer" drill bit might work but they are more expensive than the correct cable with the right lugs. Thanks
2017 Montana 3611 RL
2012 Chevy 2500HD Duramax

CA_Traveler
Explorer III
Explorer III
How about using a drill?

My install:
2009 Holiday Rambler 42' Scepter with ISL 400 Cummins
750 Watts Solar Morningstar MPPT 60 Controller
2014 Grand Cherokee Overland

Bob

enblethen
Nomad
Nomad
Verify your battery terminals. I do not use 12 volt batteries on my rig, but I remember the terminals being 5/16 on one and 3/8 on other.

Bud
USAF Retired
Pace Arrow


2003 Chev Ice Road Tracker