[Boatanchors] OFF Topic - Installing a UPS on a Naval vessel

[Glenn Little WB4UIV]

No direct knowledge for installing a UPS on ship.
The ships electrical system is not grounded to prevent battle damage 
from bringing down the electrical system.
There should be about 60 volts from each leg to ground.
About 120 volts between the legs,
To be safe, I would install an isolation transformer between the ships 
service and your equipment.
You could then probably install a UPS with a plug grounded to the hull 
without issues.
I would check with the ships electrician to be sure.

73
Glenn Little ETCS(SS) USN Retired
WB4UIV

On 7/11/2025 11:18 AM, Bill Mellema via Boatanchors wrote:
> We have a radio club on board the USS Wisconsin museum ship (BB64) moored in Norfolk, Virginia (N4WIS). We are trying to figure a way to install a UPS in our radio space, to protect our gear from voltage fluctuations and power outages. The UPS we have states that it must be connected to a grounded outlet to protect gear from surges. The ship does not have any grounded outlets period. It gets us wondering if a UPS is even suitable for shipboard installation. One idea floating was to use the ships hull as a ground, but again we are looking for input from anyone that has experience with this issue.
> Thanks In Advance,
> 
> Bill N3WMUSS Wisconsin Radio Club BB64
> 
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-- 
-----------------------------------------------------------------------
Glenn Little                ARRL Technical Specialist   QCWA  LM 28417
Amateur Callsign:  WB4UIV            wb4uiv at arrl.net    AMSAT LM 2178
QTH:  Goose Creek, SC USA (EM92xx)  USSVI, FRA, NRA-LM    ARRL TAPR
"It is not the class of license that the Amateur holds but the class
of the Amateur that holds the license"