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Old 07-13-2016, 06:59 AM   #29
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2005 30' Classic
Burlington , Ontario
Join Date: Sep 2008
Posts: 2,269
Originally Posted by amirm View Post
The cheapest meters like Harbor Freight are not auto-scaling which makes them more difficult to use (for both novice and experienced). Their probes are also horrible. I have connected them to batteries and have them not show the right value unless you really poke them into the terminals. I have a few of them I got for free and leave them in the workshop and such and not worry about getting stolen.

As someone mentioned, for RV work you really want one with a clamp meter as often you want to measure current without disconnecting cables.

A very nice but low-cost clamp meter is this Uni-T:

It is small so doesn't take much space on board. And unlike a lot of cheap Chinese meters, its construction is decent.

That looks very much like the one I have and so far I'm very happy with it.

If buying something similar - especially in the lower price range - read the description closely to make sure that the clamp for measuring current will function on BOTH AC & DC current.

Some will only work on AC, but for RV work, it is handy to have both - for example, checking current flow to brakes


Brian & Connie Mitchell

2005 Classic 30'
Hensley Arrow / Centramatics
2008 GMC Sierra SLT 2500HD,4x4,Crew Cab, Diesel, Leer cap.
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Old 07-13-2016, 07:39 AM   #30
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Don't make the mistake I did...

A guy recommended the Fluke that he had, then I saw an electrician that had one too. So I picked one up. ( no returns for electrical stuff ) It only measured volts in whole numbers. You will want the Fluke that displays decimals, for battery.

I would also recommend an inexpensive volt meter that plugs into the DC cigarette jacks. They are very convenient

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